local cfg = {    
        tpls = {               
            {  id = "TPL000000109",  name = "tpl1",  ver = 2 },              
            {  id = "TPL000000110",  name = "tpl2",  ver = 3 },           },   
            Link_type = "socket",   protocol = "tcp",   
            serial = { port = "/dev/ttymxc0", baudrate = 115200, data_bits = 8, parity = "NONE", stop_bits = 1, flow_control = "OFF" },   
            socket = { host = "192.168.174.1", port = 502, nodelay = true },   
            devs = {       
                {sn = "xx1", name = "sim1", desc = "modbus sim1", addr="1", tpl="tpl1"},       
                {sn = "xx2", name = "sim2", desc = "modbus sim2", addr="1", tpl="tpl2"},   
        }
    }

return cfg